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Archive Tag: engine life

TROUBLESHOOTING DRIVELINE NOISES: Identifying Factory Solutions

TROUBLESHOOTING DRIVELINE NOISES: Identifying Factory Solutions

May 5, 2023

GM TRANSFER CASE NOISES Customer complaints involving howling, whining, shudder or grinding noises during parking lot maneuvers in Auto Mode or highway speeds in 4HI or Auto may occur on four wheel drive GM trucks and SUV vehicles. Vehicles affected range from 2014–2023 year models. Specific applications can be identified in GM Service Bulletin 19-NA-136. […]

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DIAGNOSING PERFORMANCE COMPLAINTS: The Process Can Be a Challenging Event

DIAGNOSING PERFORMANCE COMPLAINTS: The Process Can Be a Challenging Event

February 16, 2023

Troubleshooting today’s technology can be challenging for even the most experienced technician. Making an accurate diagnosis, rather than throwing a lot of expensive parts and labor at the symptom can be a challenge. How would your shop handle the following customer complaints? a) Crank but no-start b) Hard starts c) Long crank time d) Misfire […]

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SERVICING DIESELS: Identifying Normal Characteristics

SERVICING DIESELS: Identifying Normal Characteristics

September 20, 2022

A major part of the diagnostic process is identifying an issue from a normal characteristic. Following are some examples of customer complaints that could be mistaken as a problem when they may be a normal occurrence for the application. DIESEL ENGINES AND NOISE-RELATED SYMPTOMS Customer complaints of ticking, clicking, or cycling noises on 2017–2022 GM […]

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A Difficult Diagnosis: When Multiple Conditions Create Similar Symptoms

A Difficult Diagnosis: When Multiple Conditions Create Similar Symptoms

July 21, 2022

Customer complaints of rough idle, misfires, crank but no start or long crank time symptoms can be a challenge with today’s technology. Random or multiple misfire codes may be stored in memory. Symptoms that seem like an ignition related issue may actually be fuel related, carbon induced, or in some cases a normal characteristic. Fuel […]

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ELECTRICAL CONNECTIONS OR LOW VOLTAGE: Both Can Create Intermittent Electrical Challenges

ELECTRICAL CONNECTIONS OR LOW VOLTAGE: Both Can Create Intermittent Electrical Challenges

June 27, 2022

Low voltage conditions or the integrity of an electrical connection can pose some challenging events for the technician attempting to make an accurate diagnosis. In the world of automotive diagnostics, electrical problems have proven to be the most challenging, especially intermittent problems. Intermittent performance problems can be affected by connection-relate conditions and the presence of […]

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FLUID LEVELS AND SERVICE INTERVALS: LOW FLUID LEVEL CAUSES POWER TRANSFER UNIT FAILURE

FLUID LEVELS AND SERVICE INTERVALS: LOW FLUID LEVEL CAUSES POWER TRANSFER UNIT FAILURE

May 20, 2022

LOW FLUID LEVEL CAUSES POWER TRANSFER UNIT FAILURE Are you accurately checking those fluid levels and recommending fluid flushes or exchanges, where applicable? Unfortunately, many service technicians fall into a pattern of just performing lubrication services requested by the customer, which is usually triggered by a service reminder light indicating that it is time for […]

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Diesel Service Tips: Rain and Snow Can Trash a Turbocharged Diesel Engine

Diesel Service Tips: Rain and Snow Can Trash a Turbocharged Diesel Engine

April 13, 2021

Air filters are designed to protect the engine from contaminants such as bugs, dust, dirt and other debris. Engines do not perform well when the filters are subjected to water and snow, as these conditions promote a hydro-lock of the filter media. When the hydro-lock condition occurs, the filter can be pulled from the air […]

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Maintenance and Service Intervals: The Key to Extending Engine Life

Maintenance and Service Intervals: The Key to Extending Engine Life

December 14, 2020

With proper maintenance and timely service intervals, the life of the engine and related components can be extended. Neglecting these service intervals can result in poor engine performance and internal engine damage due to the formation of sludge deposits. These deposits can restrict the flow of lubricant, promoting accelerated wear.

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ENGINE NOISES: Normal Characteristic or a Catastrophic Event

ENGINE NOISES: Normal Characteristic or a Catastrophic Event

October 26, 2020

Identifying noises that should be considered a normal characteristic or a mechanical defect can be a challenge, even for the most experienced technician. Some engines, systems and components come with their own noise characteristics that we would once consider a defect, but now are considered a normal characteristic. Some mechanical failures may not receive immediate […]

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Diagnosing Engine Misfires: Would you have Considered Engine Coolant or Oil Leaks?

Diagnosing Engine Misfires: Would you have Considered Engine Coolant or Oil Leaks?

June 9, 2020

When diagnosing a misfire condition most automatically assume an ignition or fuel related condition as the culprit. This would involve a defective spark plug, ignition wire, ignition coil, fuel injector, etc. While these components are the most likely candidates that would result in a misfire, some other conditions must also be considered with today’s engines […]

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